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/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "BluetoothCounterMetrics"
#include "metrics/counter_metrics.h"
#include "common/bind.h"
#include "os/log.h"
#include "os/metrics.h"
namespace bluetooth {
namespace metrics {
const int COUNTER_METRICS_PERDIOD_MINUTES = 360; // Drain counters every 6 hours
const ModuleFactory CounterMetrics::Factory = ModuleFactory([]() { return new CounterMetrics(); });
void CounterMetrics::ListDependencies(ModuleList* list) const {
}
void CounterMetrics::Start() {
alarm_ = std::make_unique<os::RepeatingAlarm>(GetHandler());
alarm_->Schedule(
common::Bind(&CounterMetrics::DrainBufferedCounters,
bluetooth::common::Unretained(this)),
std::chrono::minutes(COUNTER_METRICS_PERDIOD_MINUTES));
LOG_INFO("Counter metrics initialized");
initialized_ = true;
}
void CounterMetrics::Stop() {
DrainBufferedCounters();
initialized_ = false;
alarm_->Cancel();
alarm_.reset();
LOG_INFO("Counter metrics canceled");
}
bool CounterMetrics::Count(int32_t key, int64_t count) {
if (!IsInitialized()) {
LOG_WARN("Counter metrics isn't initialized");
return false;
}
if (count <= 0) {
LOG_WARN("count is not larger than 0. count: %s, key: %d", std::to_string(count).c_str(), key);
return false;
}
int64_t total = 0;
std::lock_guard<std::mutex> lock(mutex_);
if (counters_.find(key) != counters_.end()) {
total = counters_[key];
}
if (LLONG_MAX - total < count) {
LOG_WARN("Counter metric overflows. count %s current total: %s key: %d",
std::to_string(count).c_str(), std::to_string(total).c_str(), key);
counters_[key] = LLONG_MAX;
return false;
}
counters_[key] = total + count;
return true;
}
void CounterMetrics::WriteCounter(int32_t key, int64_t count) {
os::LogMetricBluetoothCodePathCounterMetrics(key, count);
}
void CounterMetrics::DrainBufferedCounters() {
if (!IsInitialized()) {
LOG_WARN("Counter metrics isn't initialized");
return ;
}
std::lock_guard<std::mutex> lock(mutex_);
LOG_INFO("Draining buffered counters");
for (auto const& pair : counters_) {
WriteCounter(pair.first, pair.second);
}
counters_.clear();
}
} // namespace metrics
} // namespace bluetooth
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